A front-end developer designs and implements the user interface of a website or application. They utilize coding languages like HTML, CSS, and JavaScript to create visually appealing and user-friendly environments. Their work involves designing responsive layouts, making sure the site is accessible and functional on various devices. They also work on debugging, performance optimization, and ensuring seamless user interaction. They often collaborate with UI/UX designers and back-end developers. They need to stay updated with new technologies and industry trends as the field evolves rapidly. The ultimate goal is to provide an optimal user experience.